Apparatus for roasting and sintering ores.



A. s. DWIGHT & n.1,. LLOYD.

APPARATUS FOR BOASTING AND SINTEBING OBES.

APPLIOATIOH TILED JUNE 19, 190']. RENEWED FEB. 23,1909. 91 ,394, Patented Mar. 23, 1909.

2 SHEETS-SHEET 1.

I. nomxl'om Wihmaoeo gm 4 i. M

A. S. DWIGHT & R. L. LLOYD.

APPARATUS FOR ROASTING AND SINTERING ORES. nruoulon FILED JUNE 19, 1907. nmrnwnn rnn. 23,1909.

916,394. Y Patehted Mar. 23, 1909.

2 SHEETS-SHEET 2.

' UNITED STATES PAT NT ()FFIGE.

ARTHUR s. DWIGHT, or JoLIE'r, ILLINOIS, m ,alcninn 1L LLOYD, a NEW YORK, N. Y',,

ASSIGNORS T0-FRED BENNITT, 'ritu's'rnn, onion-Ina, memo rs humerus iron no'as'rm o 41m atu'rnnme onus.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed June 19, 1907, set-m No. 879,805. immortal-air as," 1009. Serial No. 479,495.

To all whom it may concern:

e it known that we, ARTHUR S. DWIGHT and RICHARD L. LLoYn, citizens of the United States, formerly residing at Cananea, Sonora Republic of Mexico, the said ARTHUR S. bWIGHT now residin at J oliet,

in the county of Will, State of I linois, and

' specification, reference being had to the ac- 66 features 0 structure and operation incident ,and supply the same to the ap provements.

com anying drawinlg.

'I us invent on re ates to im rovements in the art of treating ores, particularly those whic h require roasting and sintering, such as sulfur-carry ng copper ores, and are of such nature that once being ignited an internal combustion of some of the contents of theore ,masscan be maintained provided a suitable oxidizin atmosphere e supplied.

The invention as for its object to produce a paratus that may be worked automatica y and economically in the 'treat-,, mentof ores for the pur ose of reducing.

them to sintered masses 0 convenient form and nature for subsequent treatment where necessary, as for example ina blast furnace. Figure 1 is a vertical sectional view of a mechanism embodying our present in .Fi' 2 is a cross-sectional view on the line IL- I of Fig. 1. Fig. 3 is a vertical sectional view of another form of apparatus embodying our invention. Fig. 4 is a transverse vertical section takenon the line IVIV of Fig. 3. Fig. 5 is a trans game vertical section on the line -'-V V of in an application for pa ent filed'by us,

we illustrated and descrlbed a mfifihanism for sintering and treating ores,-w,hicl 1j comprised an endless ore sup ort composed-9f sections or elements, flexi 1 connected together or articulated in suc wayth'at said sections or elements could successivelybe brought to a place of ore supply and then taken successively through or across the region where the firing commences, then throughor across the region where the com bustion supporting gas. or air is supplied, and finally; to the place of discharge'of the sintered ore; and in said ap licatlon have elected to resentthe claims flir the broader weight and pressure.

both to a mechanism of the therein set forth and also-incident to an apparatus of the sort herein presented. w discovered i that under many circumstances the different sections of the carrier or ore support 3 could,-

comesof the nature of a drum to the successive parts of which the material to 'be treated can'be fed, As an entirety, this carrying and supporting element isv indicated; by T. There can e modifications-in mi 1y, respects as concerns the details of the s ctur As sho n in g nd. .2. his. orm d at extern lfimge wa l with t. .e-mir ward proj ting i s n 6, nd he ar supporting part at ab y Y I tionswhi h re sul ably l mpe m pla e.

Th'e support for the drumstructure' consists oi the rings 0 which are elther con} tinuous around the circle or formed n sections secured together. These rest 11 on and are actuated by rollers P andjQ, w lcharr grooved or flanged to holdthem; n place.

R, Rindicate girder bars wluch'extend ,from one of the supporting rings 0 to theother, and towhich they ar firm y bol ed- Th aforesaid ring ecti ns 13 are r p ively placed, between these cr g r r R and secured, toit hemj. They have outwardly extendjn fl nges by m ans of h h flan p. the outer wal p eces I? re. bolted in p ace. ."Between the i ne id m skeleton f rmed oftthe parts B andfi. and he i Walls orbflang est are clamped the sections N which serve as a grating or bottom suport' for-the ore. At t spacers are intro- The latter prfgr cons sts of eriorated or ba d need which relieve the parts N from undue It will be seen that an ore-carrying structure..,mad.e and supported in the way do: scribed can be utilized in a manner similar tothatin which is used the endless carrier formed .of separate sections, fiexiblyhintgled together. and described in our said 0 er P cation. t L there is a hopper for refracto teria'l, and at F a hopper ifor the-ore are supplied with their respeoti port in a manner substantially similar to that above described.

other mechanism.

indicates'a hood or shield suspended above the forward travelingore mass, it

eon-forming to the curved pa'fthof-the material instead of lying in a plane as in the G indicates a gas or; oil pipe provided with burners on Jet orifices and arranged transversely across the apparatus and 111st above the exposed surface of the ore mass 7' and a little in front of the ore box or hopper F. Ihe flame or flames produced by i the burning oil or gas playing' -upon the upper surface of the ore: ignites it uniforml an across the whole surface. The air whic v is drawn through the "ore is collected in a box ortrunk" at H? situated" in the .chamber -by or spaoe in the interior oi the drum. The

i'nw'ardl extending crossplatesjor bars R are utilized as cut-pfis' for the air. They successively rotate over the air boxi or trunk,

and as they approach it move in c ose proximity to a plate It. As they recede from it they" move in proximity totheplate h att-he other edge of the trunk, there bein at all times one of these cross bars or girts c ose to each of these plates; and consequently the entrances for air are out ofi 1n alldirect ons except throu h the mass of ore. The air is withdrawn trom the box H by a suction ap gsratus connected with the duct h.

iththe-present mechanism the ore,- after treatment, can be. removed in any suitable way. Preferablythere is a chute at K arranged to come close-to the bottom of the receptacle.

As the difierent parts of the :latter reach-this chute, the ore is taken; ofi automatically "andguided by the chute to so an ab at as-t are 0f ring-l suitable a vehicle,, o is above remarked, numerous modificatime will sug 7 st themselves to those skilled in] the art.v h endless ore support or carplace of deposit, or to as'uit- .rier can be 'made in either of several ways,

having its successive sections rigidly secured to ether.- Thus, a horizontallyro- 'tated tab e-like or ring-like carriercan be ilpparatus here illustrated the grate surface.

of the drum T travels close to the edges of the airifbox H. The rings t, t, that constitute the side walls or flanges for retamithe ore whileunder treatment arerabbete ,along their inner faoesto constitute seats 7 upon which rest the wgesiotrthe site "or; perforated ore sulijportfi sis; walls th aters tering ore,

'tering erases u on the suggorting'wheels or rollers P, Q.

i1 gesare toothed or formed-into ann lar racks A, A with which engegim is a (j T eir inner ionsfi. mounted upon a driving which receives itsspower from'any suitable" In order to clearly set forth featuresoi. i our invention, we have in the drawings illus'a trated and have described two forms of structure. That presented in Fi 5.1 and 2,

embodies a number of details an structural matters supplemental to the main features of theinvention which have been made the subject of claims'in ap lication -Ser. N'o. 347,872, filed solel by-ga S. Dwight, and such details or a ditlonal matters of i1'n 1- US.- What we claim is: v 7. L 1. In any tglparatus foriroasting andr ore-reeeivin sections rip'id secured together and a l said sections being"adapted to. 3

-mined path, means for moving the said sup simultaneously move through a pro-deterprovements are not herein claimed jointly efcombination'ot an endlsss ore support or carrier, havm its successive port, means for supplying :airto permit it,- topass through the ore mass in a direction transverse to the movement of the substantially as set forth. 1

teringbre by combustion in the oremass, the combination of a endless ore support or carrier, having i% successive sections rigidly secured togeth r, means for moving said support, means for supplying a "current of air to maintain combustion n the ore mass" and means for dischargin' the sin tered ore therefrom, substantia y as set forth.

3. In'an apparatus for roasting and'sin oreb combustion in the ore mass,

support, -2. In an apparatus for roastmg-andsin {a i the combination of an endless ore support or carrierhavin itssuccessive sections rigidly secured toget er "and supported to turn about'a horizontal; axis, means for supplying air to maintain combustion in the ore while supported-upon the said sup ort or carrier, and means for removing e"s 1ntered ore "from the carrier, substantially as set forth. l-,

4. .In anapparatus for roasting"hnii sin- I I teringfoife-h combustion inthe ore ma the coinobinat oz iei an endless ore support-"oi ring-likes 0rdruin-l1ke 1 construction,

for an porting the carrier so it is, to

turn a ut--"a.zg ;horizontfl axis, means for feeding ore mid 16 carrier, and means for causing .tion or the mass or'ore situated above the airto pass'through a restricted p01.- -2

axis-"of thef snpport, substantially. as set roan:

5:111 an apparatustdrlroasting .tering ore by combustionthe ore mam,

"ore supp 'i-SO the combination; of an or carrier arranged substantially cylindrically and to turn about a horizontal axis, and an air chamber arranged within the said cylindrical support for causing air to sup ort combustion to pass through the ore 'restmg upon the support, substantially as set forth.

6. In an apparatus for roasting and sintering ore, the combination of a c lindrical ore support, 'means for feeding t e ore to the support, means for supplying air to su port combustion in the ore wh e upon t e su' port and anti friction rollers upon the support rests, substantially as set forth. 1

7, In an a paratus for roasting and sintering ore, .t e combination of a rotatin ore support, means for confinin a mass 0 ore upon the support while it is rotating, and means for causing currents of air or gas-to pass through the ore mass, substantially as set forth.

8. In an apparatus for roasting and sintering ore, the combination of an endless ore sup rt arranged to rotate in a circular pat and an an duct arranged ad'ace'nt to the circular path of the ore and a apted to cause air to 'pass through'the ore mass, substantially as set forth.

9. Inv an apparatus for roasting andsintering ore, the combination of a rotatable ore support having side walls for retaining a mass of ore-thereupon, and a perforate support adapted to permit currents of combustion-sup orting gas to pass therethrough and throng the ore mass, substantially as set forth.

10. In an apparatus for roasting and sintering ore, the combination of a rotatable ore support of cylindrical form having walls projecting beyond the support for confining the ore mass at the sides, the supgas, means port being ervious to air and at the penp ery of the holder for supporting it so it is free to rotate, and means for causing air or combustion-supporting gas to pass through the pervioussuplport and the ore mass thereon, substantia y as set forth.

In testimony whereof, we aflix our signatures each in the presence of two witnesses.

ARTHUR S. DWIGHT. RICHARD L. LLOYD.

Witnesses as to Arthur S. Dwight WILLIAM A. Bonoxnn,

. G. E. SEYMOUR.

Witnessesas to Richard Ll Lloyd:

W. J. Kmosauar, Joan N. J UDSON. 

